 Anyway, there's a nerve that comes down and goes to your heart. The nerve is called the vagus nerve. If you don't believe me, go to Dr. Google and type in vagus nerve and heart. Look, we're live. And give me a second. Vagus nerve and heart. Now watch this. Ready? I'm going to read word for word what it says. The vagus nerve helps your body manage the involuntary function of your heart.